Makes Microsoft Planner render in Dark Mode - the same as when it renders within Teams configured for Dark Mode. It only uses CSS classes and styles that Microsoft include within the product - it doesn't add any new styles, it simply forces the selection of Dark Mode. Note that Microsoft often change Planner and how it renders, so this may stop working at any time! This extension does not collect any Planner or identity or other data. It only changes pages hosted at tasks.microsoft.com.